15621515

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{139}}^1$

素因数の和:196

約数の個数: 48

約数和(自身を含む): 24595200

約数和(自身を除く): 8973685

約数列:

[1, 5, 7, 13, 19, 35, 65, 91, 95, 133, 139, 169, 247, 455, 665, 695, 845, 973, 1183, 1235, 1729, 1807, 2641, 3211, 4865, 5915, 8645, 9035, 12649, 13205, 16055, 18487, 22477, 23491, 34333, 63245, 92435, 112385, 117455, 164437, 171665, 240331, 446329, 822185, 1201655, 2231645, 3124303, 15621515]

約数ペア:

[(1, 15621515), (5, 3124303), (7, 2231645), (13, 1201655), (19, 822185), (35, 446329), (65, 240331), (91, 171665), (95, 164437), (133, 117455), (139, 112385), (169, 92435), (247, 63245), (455, 34333), (665, 23491), (695, 22477), (845, 18487), (973, 16055), (1183, 13205), (1235, 12649), (1729, 9035), (1807, 8645), (2641, 5915), (3211, 4865)]